Swift Challenger 2012 front locker door

I towed home my son-in-laws swift challenger yesterday in wet conditions and when putting it in to internal storage I noticed the front locker door seemed to be bowed out in the middle and both end catches were correctly locked. When I opened the locker
door i discovered that most things were wet.Water had obviously been streaming in up and under the door while travelling. I relocked it and found that my fingers easily fitted between the seals and the door.

Also I hate these front locker door catches (I have a swift also) Has anyone a solution for the bowing, and is there any Retro fit catches that provide a much better than these cheap one fitted by swift.